import axios from 'axios'
import { MessageBox, Message, Notification } from 'element-ui'
import store from '@/store'
import { getToken } from '@/utils/auth'

// create an axios instance
const service = axios.create({
  baseURL: process.env.VUE_APP_BASE_API, // url = base url + request url
  // withCredentials: true, // send cookies when cross-domain requests
  timeout: 5000 // request timeout
})

// request interceptor
service.interceptors.request.use(
  config => {
    // do something before request is sent

    if (store.getters.token) {
      // let each request carry token
      // ['X-Token'] is a custom headers key
      // please modify it according to the actual situation
      if (store.getters.token) {
        // 让每个请求携带自定义token
        config.headers['Authorization'] = 'Bearer ' + getToken()
      }
    }
    return config
  },
  error => {
    // do something with request error
    console.log(error) // for debug
    return Promise.reject(error)
  }
)

// response interceptor
service.interceptors.response.use(
  /**
   * If you want to get http information such as headers or status
   * Please return  response => response
  */

  /**
   * Determine the request status by custom code
   * Here is just an example
   * You can also judge the status by HTTP Status Code
   */
  response => {
    // const res = response.data
    console.log('interceptors.response')
    console.log(response)
    return response.data

    // if the custom code is not 20000, it is judged as an error.
    // if (res.code !== 20000) {
    //   Message({
    //     message: res.message || 'Error',
    //     type: 'error',
    //     duration: 5 * 1000
    //   })
    //   50008: Illegal token; 50012: Other clients logged in; 50014: Token expired;
    //   if (res.code === 50008 || res.code === 50012 || res.code === 50014) {
    //     // to re-login
    //     MessageBox.confirm('You have been logged out, you can cancel to stay on this page, or log in again', 'Confirm logout', {
    //       confirmButtonText: 'Re-Login',
    //       cancelButtonText: 'Cancel',
    //       type: 'warning'
    //     }).then(() => {
    //       store.dispatch('user/resetToken').then(() => {
    //         location.reload()
    //       })
    //     })
    //   }
    //   return Promise.reject(new Error(res.message || 'Error'))
    // } else {
    //   return res
    // }
  },
  error => {
    console.log('err', error.response) // for debug
    let code = 0
    let errors = ''
    let errorData = ''
    try {
      code = error.response.status
      errors = error.response.data.errors
      errorData = error.response.data
      console.log('code', code)
      console.log('errors', errors)
      console.log('errordata', errorData)
    } catch (e) {
      if (error.toString().indexOf('timeout')) {
        Message({
          message: '请求超时!',
          type: 'error',
          duration: 3 * 1000
        })
        return Promise.reject(error)
      }
    }
    if (code === 401) {
      MessageBox.confirm(
        '登录状态过期了哦，您可以继续留在该页面，或者重新登录',
        '系统提示',
        {
          confirmButtonText: '重新登录',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).then(() => {
        store.dispatch('user/resetToken').then(() => {
          location.reload() // 为了重新实例化vue-router对象 避免bug
        })
      })
    } else if (code === 403) {
      Message({
        message: '没有权限请求!',
        type: 'error',
        duration: 3 * 1000
      })
    } else if (code === 400) {
      Message({
        message: errors || errorData || '服务端错误',
        type: 'error',
        duration: 3 * 1000
      })
    } else if (code === 404) {
      Notification.error({
        title: '错误',
        message: '请求接口不存在!'
      })
    } else if (code === 502) {
      Notification.error({
        title: '错误',
        message: errors || errorData || '后端服务器连接失败!'
      })
    } else if (code === 500) {
      Notification.error({
        title: '错误',
        message: errors || errorData || '服务端错误!'
      })
    } else {
      Notification.error({
        title: '错误',
        message: errors || errorData || '服务端未知错误!'
      })
    }

    return Promise.reject(error)
  }
)

export default service
